In the initial days, it will take time to adjust to your specialty as you go from UG to PG. The drastic change in the field might seem challenging and it will take time for you to adapt yourself to the field. Radiodiagnosis is a field in which you had zero exposure at the UG level.
Overall, the life of a PG student in the Radiology Department of AIIMS Delhi is very relaxing and the only flaw is the lack of hands-on experience with the patients.